He wasn't name dropping to tell us the roster though. If we go from that we have over 5 members, which we know is not the case. He was saying theres a ton of characters to choose from and they could be from any roster. Not just one. He can't mention anything from the official line up this early. They would have to spend time explaining why Colossus didn't end up in the Xavier school. Something significant would have to happen to Colossus. Theres just no reason to do it in DOFP.

Spoiler!!! Click to Read!:

Colossus probably has a tiny role anyways, as he has in the other films he's in.